TW277200B - - Google Patents

Info

Publication number
TW277200B
TW277200B TW084101766A TW84101766A TW277200B TW 277200 B TW277200 B TW 277200B TW 084101766 A TW084101766 A TW 084101766A TW 84101766 A TW84101766 A TW 84101766A TW 277200 B TW277200 B TW 277200B
Authority
TW
Taiwan
Application number
TW084101766A
Other languages
Chinese (zh)
Original Assignee
At & T Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by At & T Corp filed Critical At & T Corp
Application granted granted Critical
Publication of TW277200B publication Critical patent/TW277200B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/342—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
TW084101766A 1994-05-04 1995-02-25 TW277200B (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/237,798 US5511130A (en) 1994-05-04 1994-05-04 Single diaphragm second order differential microphone assembly

Publications (1)

Publication Number Publication Date
TW277200B true TW277200B (enrdf_load_stackoverflow) 1996-06-01

Family

ID=22895229

Family Applications (1)

Application Number Title Priority Date Filing Date
TW084101766A TW277200B (enrdf_load_stackoverflow) 1994-05-04 1995-02-25

Country Status (10)

Country Link
US (1) US5511130A (enrdf_load_stackoverflow)
EP (1) EP0681410B1 (enrdf_load_stackoverflow)
JP (1) JP3338235B2 (enrdf_load_stackoverflow)
KR (1) KR950035512A (enrdf_load_stackoverflow)
CN (1) CN1114479A (enrdf_load_stackoverflow)
CA (1) CA2143226C (enrdf_load_stackoverflow)
DE (1) DE69523811T2 (enrdf_load_stackoverflow)
FI (1) FI952106A7 (enrdf_load_stackoverflow)
RU (1) RU95106477A (enrdf_load_stackoverflow)
TW (1) TW277200B (enrdf_load_stackoverflow)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5539834A (en) * 1994-11-03 1996-07-23 At&T Corp. Baffled microphone assembly
US5862240A (en) * 1995-02-10 1999-01-19 Sony Corporation Microphone device
US5692060A (en) * 1995-05-01 1997-11-25 Knowles Electronics, Inc. Unidirectional microphone
US5651074A (en) * 1995-05-11 1997-07-22 Lucent Technologies Inc. Noise canceling gradient microphone assembly
US5745588A (en) * 1996-05-31 1998-04-28 Lucent Technologies Inc. Differential microphone assembly with passive suppression of resonances
US5848172A (en) * 1996-11-22 1998-12-08 Lucent Technologies Inc. Directional microphone
US5878147A (en) * 1996-12-31 1999-03-02 Etymotic Research, Inc. Directional microphone assembly
US6798890B2 (en) * 2000-10-05 2004-09-28 Etymotic Research, Inc. Directional microphone assembly
US7881486B1 (en) * 1996-12-31 2011-02-01 Etymotic Research, Inc. Directional microphone assembly
DE19703311A1 (de) * 1997-01-30 1998-08-06 Sennheiser Electronic Grenzflächenmikrofon
EP0871312A1 (en) * 1997-04-03 1998-10-14 Pan Communications, Inc. Two-way voice communication device
US6122389A (en) * 1998-01-20 2000-09-19 Shure Incorporated Flush mounted directional microphone
DK173789B1 (da) * 1998-10-05 2001-10-22 Kirk Acoustics As Elektroakustisk kommunikationsenhed
NZ502603A (en) * 2000-02-02 2002-09-27 Ind Res Ltd Multitransducer microphone arrays with signal processing for high resolution sound field recording
AU2001274417A1 (en) * 2000-07-06 2002-01-14 Microtonic Nederland B.V. A directional microphone
US7245726B2 (en) * 2001-10-03 2007-07-17 Adaptive Technologies, Inc. Noise canceling microphone system and method for designing the same
US8463334B2 (en) * 2002-03-13 2013-06-11 Qualcomm Incorporated Apparatus and system for providing wideband voice quality in a wireless telephone
US7162041B2 (en) * 2003-09-30 2007-01-09 Etymotic Research, Inc. Noise canceling microphone with acoustically tuned ports
US7813519B2 (en) * 2006-02-02 2010-10-12 General Motors Llc Microphone apparatus with increased directivity
US20070237338A1 (en) * 2006-04-11 2007-10-11 Alon Konchitsky Method and apparatus to improve voice quality of cellular calls by noise reduction using a microphone receiving noise and speech from two air pipes
TWI318077B (en) * 2006-09-04 2009-12-01 Fortemedia Inc Electronic device and process for mounting microphone therein
US8401217B2 (en) * 2007-07-20 2013-03-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Extreme low frequency acoustic measurement system
US7832080B2 (en) * 2007-10-11 2010-11-16 Etymotic Research, Inc. Directional microphone assembly
JP5200737B2 (ja) * 2008-07-30 2013-06-05 船井電機株式会社 差動マイクロホンユニット
US8671763B2 (en) * 2009-10-27 2014-03-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Sub-surface windscreen for outdoor measurement of infrasound
JP5423370B2 (ja) * 2009-12-10 2014-02-19 船井電機株式会社 音源探査装置
JP5354295B2 (ja) * 2010-04-09 2013-11-27 和男 村上 捕音器
CN103491472A (zh) * 2012-06-12 2014-01-01 深圳富泰宏精密工业有限公司 话筒组件及应用其的便携式电子装置
US9445779B2 (en) * 2014-10-02 2016-09-20 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Infrasonic stethoscope for monitoring physiological processes
GB2561021B (en) * 2017-03-30 2019-09-18 Cirrus Logic Int Semiconductor Ltd Apparatus and methods for monitoring a microphone
US11769510B2 (en) 2017-09-29 2023-09-26 Cirrus Logic Inc. Microphone authentication
GB2567018B (en) 2017-09-29 2020-04-01 Cirrus Logic Int Semiconductor Ltd Microphone authentication
AU2018414045B2 (en) * 2018-03-22 2021-05-06 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Microphone, mobile terminal and electronic device
US11134337B2 (en) * 2019-11-18 2021-09-28 Bose Corporation Variable port microphone

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640110A (en) * 1949-10-29 1953-05-26 Rca Corp Second order gradient directional microphone
US4584702A (en) * 1983-12-19 1986-04-22 Walker Equipment Corporation Noise cancelling telephone transmitter insertable in telephone handset receptacle
US4773091A (en) * 1986-06-16 1988-09-20 Northern Telecom Limited Telephone handset for use in noisy locations
GB2200814B (en) * 1987-01-29 1990-02-28 Crystalate Electronics Microphone
US5239578A (en) * 1990-05-15 1993-08-24 Plantronics, Inc. Noise cancelling apparatus for a telephone handset
DD301685A9 (de) * 1990-07-20 1993-06-24 Nordhausen Fernmeldetech Gmbh Akustisches verbundsystem fuer handapparate
JPH0491542A (ja) * 1990-08-07 1992-03-25 Fujitsu Ltd 指向性マイクモジュール及び該モジュールを備えた電話機用ハンドセット
US5268965A (en) * 1991-11-18 1993-12-07 Motorola, Inc. User selectable noise canceling for portable microphones
US5226076A (en) * 1993-02-28 1993-07-06 At&T Bell Laboratories Directional microphone assembly

Also Published As

Publication number Publication date
EP0681410A3 (en) 1999-05-06
DE69523811T2 (de) 2002-06-27
DE69523811D1 (de) 2001-12-20
RU95106477A (ru) 1996-12-10
KR950035512A (ko) 1995-12-30
US5511130A (en) 1996-04-23
HK1003472A1 (en) 1998-10-30
JP3338235B2 (ja) 2002-10-28
EP0681410B1 (en) 2001-11-14
JPH07307990A (ja) 1995-11-21
FI952106L (fi) 1995-11-05
EP0681410A2 (en) 1995-11-08
FI952106A0 (fi) 1995-05-03
FI952106A7 (fi) 1995-11-05
CA2143226C (en) 1999-01-12
CN1114479A (zh) 1996-01-03
CA2143226A1 (en) 1995-11-05

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